The South Korean government has granted approval to begin construction on what will be the world's first "invisible" tower. Called the Infinity Tower, it will be equipped with an LED facade system and optical cameras to give it a reflective skin — and a striking translucent appearance.

There are so many imaginative visions of what future cities, skyscrapers, and towers will look like — but who would have imagined invisible structures? Designed by GDS Architects, the Infinity Tower will be just that.